After formation of world trade organization (WTO) world agricultural products market shall be transformed, in this issue we take advantage of a partial eqilibrium model to study effects of world market liberalization in Iran rice market. In this way by using of time series data estimate supply and demand function for rice. The sab results of this study shows that price with one period lag is the importnat explantion variabel for supply function. Price, substitue and income elastisity of demand respectivly is -0/24, 0/5, O/07.The basis result of study shows that Iran rice market is influenced by exchang rate. in contrast with Cramer eta) result, after liberalization Iran import shallnot be decreased and so In contrast with A. P. E. S result cunsumer’s surplus increases and producer’s surplus decreases.
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